Clutch worked for 5,000 miles on trifecta 93 tune. Then had to go to the spec stage 3+ and flywheel after 500 miles on e85 tune. Discussed fueling problems with vince and the best solution was 2 gallons of 110 leaded per tank of e85. The e85 counteracts the lead buildup on the wideband and knock and cels are a thing of the past. 2 gals of 93 would work almost as good but just love the smell of turbo blue.

I'm sorry,
I've read through what seems this whole thread and can't seem to find a definitive answer as to whether the Trifecta e85 tune reduces or improves gas mileage/performance. I saw the what appeared to be a dyno graph but that's about it. I've had my car for going on five years without any aftermarket tune and am currently takin applications. Thanks in advance.

So, to bring this thread back. Toward the end of this thread it looks like people are saying the engine can't get enough fuel with this tune and E85. Is this correct? Is anyone still running this tune? Issues?

lol I bet not. Are you still on the stock clutch? How long have you had this tune? No issues with any parts deteriorating from the E85? The numbers this tune seems to give are exactly where I want my car to be and for far cheaper than other options.

So I think more people who have this tune need to weigh in here. This thread is very incomplete. I'm really wanting to get this tune, but I'm a little afraid my '09 RL with 75k miles won't hold up to it very well.

I have a Solstice and have the E47 Tune from Vince. I ran 6 tanks through the car in about 3 months until temps dropped in Jan and went back to 93 tune from Vince. During E47, I noticed considerable more power!! I did not notice any drop off in power due to fuel in upper RPMs but that is the reason I went with E47. Vince said E47 can get close to E85 in terms of power without fuel starvation and without some of the E85 potential issues. It does make fueling a little more difficult.

I have 275/45/18 Conti DW in back to hold the power better. Still was able to get squirrelly but only when I tried. Put on stock tires and it was like driving hard on cold wet roads...completely stupid. Went back to 93 tune and ran about 4 tanks through it and fuel gauge started acting up. Read that Techron is a fix. Rans a couple tanks of chevron through it as well as a bottle of Techron and all has been well. I run Amoco Gold most of the time and thats what was in car when fuel gauge acted up. My E85 station is called Mapco...probably not the best gas. At this point, I do not know if ethanol was the culprit or not.

I also tracked mpgs and noticed a consistent drop of about 10-12% compared to 93. This could be partially the larger tires fault as well. No tanks with 93 and large tires yet. The 10% drop in mileage is mostly offset by lower cost per gallon too. Here ethanol is not 10% cheaper than regular. In SD it is. Right now, 87 is 3.44 and E85 is 3.14. When I was using e85, it was a consistent 20 cents less than 87. During E47, I tried half 87 octane as well as 93 and noticed no difference in anything.

Installed backbone, venom brace and pro beam after going back to 93 tune and that makes the car stick alot better. I was looking for improvement but was not expecting as much as I got. When I go back to E47 I will probably not be able to get sideways.

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